Sistem Pemantau Cuaca Mengunakan Sensor Dht22 Berbasis Mikrokontroler Atmega 328 dengan Tampilan Running Text

Abstract

It has been successfully designed a flattening system using a DHT22 sensor based on the Atmega 328 microcontroller with running text display built to provide information on changes in weather conditions to each building user with a P10 display. Rainy conditions in Indonesia are currently unpredictable or not in accordance with the calculation of the climate that should be. The purpose of designing this tool is to find out the working principle of the DHT22 sensor, rain drop water sensor, and LDR (Light Dependent Resistor) sensor, how the weather monitoring device works, as well as analyze the comparison of temperature and humidity measurements of the tool used with the comparison device. The working principle of this tool, data were obtained from the DHT22 sensor, rain sensor 1, rain sensor 2 LDR sensor. The data obtained from each sensor will be processed in the ATmega 328 mikrrocontroller. Data that has been processed in the ATmega 328 mikrrocontroller will be sent via the HC-05 bluetooth module (Master) to the HC-05 (Slave) bluetooth module in wireless communication. The data received by the HC-05 bluetooth module will be processed in the ATmega 328 mikrrocontroller and as the output will be displayed in P10 (Running Text). The average value of temperature and humidity in the weather in Medan City is 30.0ºC and 73.9% RH.